Cylindrical brush.



socket 2 are so arranged relative to each UNiTED STATES ATENT l EEICE.

GEORGE F. MCINDOE, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF TWO- THIRDS TO JAMES W. MCINDOE, OF BOSTON, MASSACHUSETTS, AND ARTHUR E. WHITNEY, OF WINCHESTER, MASSACHUSETTS.

CYLINDRICAL BRUSH.

SPECIFICATION forming part of Letters Patent No. 712,322, dated October 28, 1902.

l Application liled September 4, 1901. Serial No. 74,269. (No model.)

To a/ZZ whom, it may concern:

Be it known that I, GEORGE F. McINDoE, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Cylindrical Brushes, of which the following, taken in connection with the accompanying drawings, is a specification. 1

My invention relates to cylindrical brushes, and has for its object the production o f abrush which when rotated in contact with the sur-v face of a sheet or roll of paper having thereon a uniform coating of coloring material in a moist or undried state will remove portions of the coloring-matter in places and add coloring-matter in other places, thereby producing a multicolored .or multishaded paper; and it consists in certain novel features of construction, arrangement, and combination of parts which will be readily understood by reference to the description of the accompanying drawings and to the claim hereto appended and in which my invention is clearly pointed out.

Figure l of the drawings is an end elevation of a brush illustratingmy invention. Fig. 2 is a sectional elevation of the same, the cutting plane being on line VA A on Fig. l. Fig. 3 is an elevation of a single cluster of the bristles which make up the operative surface of the brush, drawn to an enlarged scale; and Fig. e is an elevation of three clusters of the bristles as they appear when operating upon the paper.

In the drawings, 1 represents the barrel of the brush,made, preferably, of wood, in which are formed a series of cylindrical sockets 2, in each of which is set a bunch or cluster of bristles 3, each cluster being composed of bristles of several different lengths, the shorter bristles being intermingled with the longer ones throughout each bunch or cluster, as shown at 4:, 5, 6, 7, 8, and 9. (See Fig. 3.)

The 4individual bristles which compose a bunch or cluster to be set in an individual other as to form spaces between them instead of being pressed into firm contact with each other, as is ordinarily the case in making bristle-brushes, whereby the bristles at their outer ends will be more -open or separated from each other than ordinarily.

The operation of my invention is as follows: The paper to be operated upon is fed along a iat bed or over a drum in any wellknown mannerandis coated with an even tint of coloring material alsouin any well-known mannerandwhile in a moist stateis passed beneath my improved brush,so located that the shortest bristles in the-brush will just lightly touch the coated paper and remove a small portion of the color and deposit more or less of the removed color on the paper in another spot, while the longer bristles will maintain their contact with the paper for a longer time in proportion to their lengths, and thus remove color for a greater distance and Vdepositing more colorin advance of the place from which it removed it and producing a mottled or variegated colored surface composed of a series of long and short stripes of light and darker color, as described in another application of mine, filed December l2, A

1898, Serial No. 699,055,

Fine spring brass wire maybe used in place of the bristles, if desired, the end of each wire being rounded to prevent scratching or tearing of the paper.

The brush shown inthe drawings is only illustrative of lthe construction that is ernployed 5 but the brush for actual use will have length at least equal to the width of the sheet or Web of paper or other material upon which it is to be used and may be of any convenient or desired diameter.

What I claim as new, and desire to secure by Letters Patent of the United States, is-

A brush composed of a cylindrical core or body, anda series of bunches or clusters o f spring-ingers,set therein and radiating therefrom, the bristles in each cluster being of several different lengths, the longer and shorter bristles being thoroughlyiintermingled with each throughout the entire cross-sectional area of cach cluster, so that both long and short bristles are located at the periphery of said cluster as well as at its center.

In testimony whereof I.` have signed my name to this specification, in the presence of roo two subscribing witnesses, on this 28th day of August, A. D. 1901.

GEORGE F. MCINDOE. Witnesses:

N. C. LOMBARD, ALBERT E. TEMPLE. 

